JP2020511234A - Implant analog - Google Patents

Abstract

The dental implant system includes a prosthetic contact surface of the implant analog such that the prosthetic contact surface of the implant analog matches one or more portions of the prosthetic contact surface of the implant. The same longitudinal cross-section and position relative to the implant abutment member contact surface and the longitudinal axis, the implant analog prosthesis contact surface at discrete locations around the implant analog perimeter and / or implant analog abutment member contact. Located at at least one radial location away from the surface, the prosthetic contact surface of the implant analog is therefore at least circumferentially and / or radially discontinuous relative to the prosthetic contact surface of the implant. [Selection diagram] Fig. 6

Description

  The present invention is a dental implant analog having a surface provided in contact with a complementary surface of a prosthetic member, the surface of the implant analog being formed by circumferentially or radially spaced struts. , Therefore, to a dental implant analog that forms a discontinuous surface to allow for drainage of the adhesive applied to the prosthesis member.

  Dental implants are used to replace individual teeth or to secure more complex structures, which typically replace multiple teeth or even all teeth. The materials used for dental implants are often titanium and its alloys, but more and more ceramics. These materials have the necessary strength to withstand the mechanical loads that occur, while at the same time being sufficiently biocompatible for osseointegration and long-term use in the oral cavity.

  The implant comprises two main parts, a fixed part and an abutment member part. The fixation component is embedded in bone and osseointegrates with bone tissue to provide a rigid fixation for the prosthesis. The abutment member projects into the oral cavity and provides a core support for the prosthesis. A desired prosthesis member (eg, a bridge or crown) is mounted over the abutment member, at least a portion of the abutment member being housed inside the prosthesis to provide a core support for the prosthesis.

  The implant can be constructed as one piece and the fixation and abutment member pieces are manufactured as one integrated monolithic piece. Thus, in such an implant system, the integrated fixation component and abutment member are always placed in the oral cavity at the same time and the single component implant projects into the oral cavity to form the core support of the prosthesis.

  However, implants are often configured as two or more parts, where the implant comprises at least a stationary component, often referred to alone as an implant, and a separate abutment, sometimes referred to as a spacer or post. It consists of members. The anchoring component is typically completely embedded in the bone, i.e. up to the level of the alveolar crest, often referred to as a "bone level" implant, or protruding into the soft tissue a few millimeters from the alveolar crest Often known as a "tissue level" implant. The abutment member is attached to the fixed component either directly or indirectly after the fixed component is integrated (bone-bonded) with the bone or immediately after the fixed component is inserted. The abutment member can also be attached to the stationary component prior to insertion. Most commonly, however, the abutment member is not worn until after osseointegration.

  Multi-part implants are more versatile than single-part implants. This is because the fixed part and the abutment member can be adapted to individual requirements. In particular, the shape of the abutment member and the angle with respect to the fixed part can be selected after implant insertion. This gives the surgeon greater flexibility and room for implant placement errors. A further advantage of multi-part implants is that the abutment member can be made of a different material than the fixed part.

  Due to their versatility, multi-part dental implants, and especially two-part dental implants, are more widely used than single-part implants, and the present invention relates to this form of implant system. Therefore, in the rest of the specification, unless stated otherwise, the term "implant" will be used to refer to the fixed component of a multi-part implant, ie, the member that is fixed in the bone during use. The term "abutment member" is used to refer to a separate component that, in use, is directly or indirectly coupled to the implant to project into the oral cavity and provide the core support for the dental prosthesis.

  Implant analogs are the components used to replicate dental implants in the physical model of the patient's mouth. Such a model is a model of the oral cavity or a part of the oral cavity, and can be obtained by, for example, conventional plaster casting or laser sintering using CAD data of a patient. The resulting model with implant analog can be used by a dental technician to make a patient-specific prosthesis that is attached to an intact implant already implanted in the patient's mouth. During this process, the abutment member is attached to the implant analog and, in some cases, modified and the prosthesis is made using one of several known methods, for example, lost wax casting, off-the-shelf coping. Alternatively, it is constructed and molded on the abutment member using veneer mounting or casting on a custom coping, direct veneer mounting on the abutment member, or the like.

  Known implant analogs include an essentially identical restoration of the coronal end of the implant, allowing the abutment member to be fixedly coupled to the implant, and the implant abutment member connecting structure. And a coronal end surface (there may be a plurality). The coronal end of the implant typically has at least one coronally facing flat or tapered shoulder, which is smooth and continuous for contact with the prosthesis and / or abutment member. Having a surface. Typically, this surface is circularly symmetric about the implant's longitudinal axis, but with implants having wavy or beveled coronal ends, i.e., high about the longitudinal axis to more accurately follow the contours of the bone or soft tissue. Implants having coronal end surfaces with undulating or otherwise varying are known. The smooth continuity of the shoulders provides a contact surface against which the prosthesis and / or abutment member can abut around the entire circumference of the components, which results in good force transmission between the components. As well as being possible, a blockage against bacteria is formed.

  The associated implant analog replicates the coronal end surface (s) of the implant and allows the abutment member to be placed in equal contact with the implant analog during the creation of the prosthesis, and the prosthesis The prosthesis can be designed to fit snugly on the implant surface if the object is intended to contact the implant. The apical end of the implant analog is usually shaped to be fixed (either permanent or removable) within the model, unlike the apical end of the implant. The material used to make the implant analog may be different than the implant, as the implant analog is not used in the patient's mouth and does not have to withstand the same mechanical forces. For the same reason, implant implants are not subjected to any surface treatment such as sandblasting or acid etching that may be applied to implants to improve osseointegration.

  Examples of methods for making implant analogs and models containing implant analogs can be found in US Pat. Traditionally, implant analogs are rigidly and immovably embedded in the model, but there are implant analogs that can be removed and replaced in the model. See, for example, US Pat.

  Once the prosthesis is complete, the abutment member and prosthesis are attached to the implant. This can be accomplished in multiple ways depending on the design of the implant system and the dentist's preference. In some cases, the abutment member is screwed to the implant either directly or, more commonly, indirectly with a separate screw. Alternatively, the abutment member can be adhered and set to the implant. Also, the prosthesis can be glued or screwed to the abutment member before or after the abutment member is connected to the implant.

  If the prosthesis is glued to the abutment member, this can be done in situ in the patient's mouth. However, since it is more difficult to remove the overflowing cement in this environment as compared to the laboratory, such a direct bonding in the oral cavity is usually avoided. Therefore, if possible, the bonding of the prosthesis to the abutment member is done in the laboratory. If the prosthesis is designed to abut the coronal end of the implant, this gluing will be done using the implant analog to allow the prosthesis to be correctly placed and closed. To be connected to the abutment member.

  However, in this situation the problem may arise that cement may be trapped between the coronal shoulder of the implant analogue and the corresponding contact surface of the prosthesis. If the prosthesis is directly adhered to the abutment member in the oral cavity, such a cement layer between the implant and the prosthesis does not cause any problems and indeed ensures a good seal between the components. To help. However, if the gluing is done in the lab, the glued abutment member / prosthesis unit must be removed from the implant analog for attachment to the implant. When the prosthesis is lifted from the implant analog, some or all of the cement layer may be left behind. Therefore, when the prosthesis is placed on the implant, there is a gap between the implant shoulder and the prosthesis. This gap is not acceptable as it allows bacteria to penetrate the implant system, and in some cases the implant itself, leading to infections, disease and loss of the implant.

  An example of this problem is shown in Figures 1A and 1B. Here, the abutment member 20 is attached to the implant analog 10 (FIG. 1A). The implant analog comprises an identical replica of the abutment member connection structure including the flat coronal shoulder 108 of the dental implant body 1. The abutment member has an annular shoulder 21 that abuts the inner region of the implant analog shoulder 18. The outer region of the shoulder 18 is covered by the prosthesis 30. The prosthesis 30 is bonded to the abutment member 20. During this process, cement often overflows from the joint between the abutment member 20 and the prosthesis 30 to form a layer between the implant analog shoulder 18 and the lower edge of the prosthesis. That is, the prosthesis does not fit snugly on the implant analog shoulder. The abutment member 20 and the prosthesis 30 are glued together and then removed from the implant analog 10 and placed on the dental implant body 1 already implanted in the patient's oral cavity (FIG. 1B). If all or part of the cement layer formed between the prosthesis and the implant analogue remains on the implant analogue when the abutment member / prosthesis unit is removed, the prosthesis is placed on the dental implant body 1. Once in place, there will be a gap G (exaggerated for illustration) between the prosthesis 30 and the crown-facing shoulder 108 of the dental implant body 1.

  This problem can be avoided by creating an implant system in which only the abutment member contacts the implant shoulder. However, this results in the abutment member being visible between the implant and the prosthesis, which may be aesthetically unfavorable, especially if the abutment member is made of metal.

US Pat. No. 6,068,478 U.S. Patent Application Publication No. 2015/374466 US Pat. No. 5,934,906 European Patent No. 2389891

  Accordingly, the problem solved by at least one preferred embodiment of the present invention is to abut the prosthesis in the laboratory while preventing the formation of adhesive gaps when the prosthesis is subsequently coupled to the implant. It is to provide an implant analogue that allows it to be adhered to a ment member. In other words, the present invention seeks to ensure a snug connection between the contact surface of the implant and the contact surface of the extraoral prepared final prosthesis.

One aspect of the invention is a dental implant system comprising a dental implant body and associated implant analogs, the dental implant body extending from the apical end to the coronal end along a longitudinal axis. The dental implant body extends to an outer surface for fixation and osseointegration into bone and a coronal end portion having an abutment member connection structure, the abutment member connection structure being the dental structure. A coronal end portion that is a structure for cooperating with the abutment member so that the abutment member can be mounted at one or more defined locations on the implant body. Is an abutment member contact surface that extends around the entire circumference of the dental implant body and is in direct contact with the abutment member during use. And has a coronally facing abutment member contacting surface that provides a stop that defines an axial position of the abutment member with respect to the dental implant body, the coronal end portion radially having the abutment. A crown-facing prosthesis contact surface disposed at a position beyond the member contact surface, which is a continuous surface extending around the entire circumference of the dental implant body. Further comprising: the associated implant analog extending along the longitudinal axis from the apical end to the coronal end, the associated implant analog having a non-rotating fixation in a dental model. An outer surface having a non-rotating portion having a non-circular symmetrical cross section in a plane perpendicular to the longitudinal axis for the purpose of: The analog head includes an abutment member coupling structure for cooperating with the abutment member so that the abutment member can be mounted at the same one or more defined positions on the implant analog. The abutment member connecting structure is a crown that provides an abutment member contact surface that is in direct contact with the abutment member during use and that provides a stop portion that defines an axial position of the abutment member with respect to the implant analog. Of the implant analog having a lateral abutment member contact surface, the analog head further having a crown lateral prosthesis contact surface disposed radially beyond the abutment member contact surface. The contact surface of the abutment member is the abutment member of the implant analog. The abutment member contact of the dental implant body about the entire circumference of the implant analog such that the contact member contact surface matches at least a portion of the abutment member contact surface of the dental implant body about the entire circumference. The coronally facing prosthetic contact surface of the implant analog having the same longitudinal cross section and radial position with respect to the longitudinal axis as at least a portion of the surface, and the coronally facing prosthesis of the implant analog. Same as one or more portions of the dental prosthesis contact surface of the dental implant body such that an object contact surface matches one or more portions of the dental prosthesis contact surface of the dental implant body. The implant having a longitudinal cross section and a position relative to the abutment member contact surface and the longitudinal axis of the dental implant body; The coronal prosthetic contact surface of the analog is disposed at discrete locations around the outer circumference of the implant analog and / or at least one radial location away from the abutment member contact surface of the implant analog, Therefore, compared with the coronal prosthetic contact surface of the dental implant body, the coronal prosthetic contact surface of the implant analog is discontinuous at least circumferentially and / or radially. It is an implant system.

  Thus, according to the present invention, the surface of the implant analog configured to contact the prosthesis is shaped such that the implant analog contacts the prosthesis at only a few supporting points. This creates a discontinuous contact between the implant analog and the prosthesis. Thus, discontinuities in the implant analog prosthesis contact surface allow the implant analog prosthesis contact surface to drain while allowing the overflow cement to drain rather than form the problematic cement layer described above. Prosthetic support is provided.

  The discontinuous contact points provided by the implant analog prosthesis contact surface allow the prosthesis to be accurately positioned and adhered onto the abutment member so that the prosthesis fits snugly against the implant prosthesis contact surface. Will be installed. Compared to the prosthetic contact surface of the implant, the prosthetic contact surface of the implant analog is discontinuous in the circumferential and / or radial directions. Thus, in contrast to conventional systems in which the implant analog accurately replicates the coronal end of the associated implant, in the present invention the implant analog has a modified prosthetic contact surface for the implant.

  Despite this modification, the discontinuous prosthetic contact surface of the implant analog matches the prosthetic contact surface of the associated implant. “Mate” means that the point that constitutes the discontinuous prosthetic contact surface of the implant analog with respect to the abutment member contact surface and the longitudinal axis of each component is the point on the continuous prosthetic contact surface of the implant. Is the same as. Thus, the implant analog prosthesis contact surface has the same longitudinal cross-section as the implant prosthesis contact surface at the same location as measured relative to the abutment member contact surface and the longitudinal axis of each component. This ensures that when the bonded abutment member prosthesis unit is transferred to the implant, the prosthesis, which is just placed on the discontinuous prosthesis contact surface of the implant analog, will be placed on the continuous prosthesis contact surface of the implant Also ensures that it is installed snugly.

  The terms "identical" and "match" as used throughout this specification should be construed in view of the manufacturing tolerances and general limits of reproducibility of the manufactured parts, ie, the implant and the present invention. The mating surfaces of the implant analogs are identical only to the extent practically possible.

  The prosthetic contact surface of the implant analog is discontinuous while the abutment member contact surface of the implant analog matches at least a portion of the abutment member contact surface of the implant around the entire circumference of the implant analog. In this case, “match” means that the points forming the abutment member contact surface of the implant analog with respect to the longitudinal axis of each component are the same as the points on the abutment member contact surface of the implant. To do. Thus, the implant analog abutment member contact surface has the same longitudinal cross section as the implant abutment member contact surface at the same radial position as measured relative to the longitudinal axis of each component. Thus, the abutment member contact surface of the implant analog is circumferentially continuous because the abutment member contact surface of the implant analog matches the abutment member contact surface of the implant around the entire circumference of the implant analog. The abutment member contact surface of the implant analog matches the implant abutment member contact surface around the entire circumference, but the abutment member contact surface need not match the entire abutment member contact surface of the implant. That is, the two surfaces may have different radial extents. However, it is preferred that the abutment member contact surface of the implant analog match the entire abutment member contact surface of the implant.

  According to conventional dental terminology, "apical" refers to the direction toward bone and "crown" refers to the direction toward teeth. Therefore, the apical end of the component is, in use, the end facing the jawbone, and the end on the crown side is the end facing the oral cavity. With respect to implant analogs or any other component that is not placed in the oral cavity but is used in a model of the oral cavity, these terms refer to the ends of the modeled jawbone and tooth (oral cavity) facing components, respectively. .

  "Coronally-facing" means that the surface extends radially, that is, the surface has a radial dimension, and faces the crown end of the component, It means that it is visible when viewed. The surface may extend perpendicular to the longitudinal axis of the component or may be inclined with respect to the longitudinal axis of the component in the crown direction or the apical direction. Thus, the crown facing surface provides a stop surface against which a second component located on the component can abut from the crown end.

  According to the present invention, the implant has an abutment member connecting structure including a crown-side facing abutment member contact surface. The abutment member contact surface of the implant is located radially inward of the prosthetic contact surface and provides a stop that defines the axial position of the abutment member with respect to the implant. The abutment member contact surface of the implant is circumferentially continuous. This provides a rigid closed stop surface upon which the abutment member rides during use, which allows transmission of force to the implant and provides a blockage against bacteria. The associated implant analog has an abutment member contact surface that conforms to the implant abutment member contact surface around the entire circumference of the implant analog. This provides a rigid stop surface upon which the abutment member rides upon use, the abutment member conforming to the abutment member contact surface of the implant. This ensures that the abutment member rides on the implant analog at the same position as the implant relative to the prosthetic contact surface. The continuity of this surface prevents tilting of the abutment member and also prevents overflowing cement from spreading radially inward where it may interfere with other members of the abutment member connection structure. It

  Accordingly, the implants and associated implant analogs of the present invention are intended for use in combination with abutment members designed to contact abutment member contact surfaces of both implants and implant analogs. The discontinuous prosthetic contact surface of the implant analog assists the user in accurately adhering the prosthesis to the abutment member to ensure a snug contact with the implant.

  Thus, preferably, the system further comprises an abutment member having an apex and a crown, at least the apex extending along the longitudinal axis, the apex implanting the abutment member. A coupling structure cooperating with an implant and implant analog abutment member coupling structure such that it can be installed in the same one or more defined positions both on the top and on the abutment member, the coupling structure comprising: An apical contact surface that directly contacts the abutment member contact surface to define an axial position of the abutment member relative to the implant and implant analog. And the implant analog is complementary to the contact surface of the abutment member, and the contact surface facing the apex is a circumference. The contact surface of the abutment member contacts the implant abutment member contact surface around the entire circumference of the implant when the abutment member is installed on the implant. However, the abutment member is positioned radially inward of the prosthetic contact surface such that the prosthetic contact surface remains exposed, and when the abutment member is installed on the implant analog, the apex of the abutment member is apex. The lateral contact surface contacts the implant analog abutment member contact surface around the entire circumference of the implant analog and the abutment member has a radius of the prosthetic contact surface such that the prosthetic contact surface remains exposed. Positioned inwardly of the implant, the abutment member is positioned on the implant relative to the prosthetic contact surface of the implant analog. It takes the same position as the position taken relative to the prosthesis contact surface of the implant when it is location.

  "Apical facing" means that the surface extends radially, ie has a radial dimension, and faces the apical end of the component, as viewed from the apical end. It means that it is visible. The surface may extend perpendicular to the longitudinal axis of the component or may be inclined with respect to the longitudinal axis of the component in the crown direction or the apical direction. Thus, the apical-facing surface provides a stop surface that when the component is placed from the crown end onto the second component, the crown of the second component. It can abut the side-facing surface.

  According to this preferred embodiment, both the abutment member contact surface of the implant analog and the apical side contact surface of the abutment member are circumferentially continuous, and when the abutment member is installed on the implant analog, These two surfaces make contact with each other around the entire circumference of the implant analogue, thereby forming a circumferentially closed contact between the components. These surfaces are preferably sized and shaped such that when the abutment member is placed on the implant analog, the radially outermost edges of the surfaces are aligned. However, in some embodiments, the apical-sided contact surface is provided with a radial implant analog abutment so that the under-exposed cement of the abutment member can be removed prior to coupling to the implant. It may extend slightly beyond the member contact surface. Similarly, in other embodiments, the implant analog abutment member contact surface can extend radially slightly beyond the apical side facing contact surface. However, in such embodiments, the prosthesis should be designed so that it does not contact the exposed areas of the implant analog abutment member contact surface.

  The crown portion of the abutment member of the present invention is preferably intended to be connected to a dental prosthesis. The crown portion may extend along the same longitudinal axis as the apex or may be inclined with respect to the longitudinal axis. In a preferred embodiment, the crown comprises on its outer surface non-rotating means cooperating with complementary non-rotating means formed in the cavity of the dental prosthesis.

  According to the present invention, the implant and associated implant analog have abutment member contacting surfaces that conform to each other around the circumference of the component. The implant abutment member contact surface and thus also the implant analog abutment member contact surface are preferably linear in all longitudinal cross-sections, i.e. in all planes containing the implant or implant analog longitudinal axis, respectively. . Such a surface makes it easier to design and fabricate complementary apical contact surfaces of the abutment member. For the same reason, the linear longitudinal section is preferably constant around the longitudinal axis of the implant or implant analogue, respectively.

  As described above, an implant in which the coronal end portion is wavy or inclined is known. Thus, the axial height of the abutment member contact surface of the implant and thus also the abutment member contact surface of the implant analog varies about the longitudinal axis of the implant or implant analog, respectively, forming a wavy or sloping surface. Is possible. In such an embodiment, the longitudinal cross-section of the abutment member contacting surfaces of both the implant and implant analog may vary about the longitudinal axis. For example, the longitudinal cross-section of the abutment member contact surface may be tapered from horizontal to, toward or away from the axis, and back to horizontal, such that the surface is corrugated about the axis. May change. Alternatively, the cross section is tapered around the entire circumference of the implant and thus the associated implant analog, although the degree of taper may be different.

  However, the abutment member contact surface of the implant, and thus also the abutment member contact surface of the associated implant analog, are preferably circularly symmetrical about the longitudinal axis of the implant and implant analog, respectively. In a particularly preferred embodiment, this surface also has a linear longitudinal cross section, the abutment member contact surface of the implant and thus of the associated implant analogue being perpendicular to the longitudinal axis or in the crown direction or root. It is inclined with respect to the longitudinal axis in the apex direction and forms a conical or frustoconical surface.

  The apical-facing contact surface of the abutment member of the preferred embodiment of the present invention is complementary to the abutment member contact surface of the implant and implant analog, and thus this surface is likewise, on demand. It can be corrugated, beveled, or have a linear longitudinal cross-section that varies around the outer circumference of the abutment member. However, in a preferred embodiment, the apical-facing contact surface of the abutment member is circularly symmetric and has a linear longitudinal cross section.

  Like the abutment member contact surface, the implant prosthesis contact surface and thus also the implant analog prosthesis contact surface is preferably linear in all longitudinal cross-sections. Such a surface makes it easier to design and create a complementary surface of the prosthesis that contacts the prosthetic contact surface. For the same reason, the linear cross section is preferably constant around the axis of the implant and the implant analog, respectively.

  The axial height of the prosthetic contact surface of the implant and thus also of the prosthetic contact surface of the implant analogue can be varied around the longitudinal axis of the implant or implant analogue, respectively, to form a wavy or sloping surface. is there. In such embodiments, the longitudinal cross-section of the prosthetic contact surface can also vary about the longitudinal axis, as described above with respect to the abutment member contact surface.

  However, the prosthetic contact surface of the implant, and thus also the prosthetic contact surface of the associated implant analog, is preferably circularly symmetrical about the longitudinal axis of the implant and the implant analog, respectively. In a particularly preferred embodiment, this surface also has a linear longitudinal cross section, the prosthetic contact surface of the implant and thus of the associated implant analogue being perpendicular to the longitudinal axis or in the crown direction or It is inclined with respect to the longitudinal axis in the direction of the apex and forms a conical or frustoconical surface.

  According to the invention, the prosthetic contact surface of the implant analogue is discontinuous, at least in the radial or circumferential direction, compared to the prosthetic contact surface of the implant. Therefore, the prosthetic contact surface of the implant analog does not extend around the entire circumference of the implant analog and / or begins at a radial position away from the abutment member contact surface. In the present invention, the prosthesis contact surface is radially spaced from the abutment member contact surface, i.e., at a position remote from the radially outermost edge of the abutment member contact surface, and the implant analog abutment member contact surface. The prosthesis contact surface is considered as a discontinuous surface in the radial direction because a gap is formed between the prosthesis contact surface and the prosthesis contact surface. In use, the prosthesis is adhered to the outside of the abutment member so that the radial gap between the abutment member contact surface and the beginning of the prosthesis contact surface causes a gap between the prosthesis and the implant analog. Radially discontinuous contacts are formed.

  The implant analog prosthetic contact surface is formed by the coronal ends of a plurality of circumferentially spaced struts or the coronal ends of one or more annular struts radially spaced from the abutment member contact surface. Preferably. The prosthesis contact surface formed by the coronal ends of the strut (s) forms a prosthesis of the implant so as to form a support for the prosthesis accurately positioned with respect to the abutment member contact surface. While conforming to the object contact surface, the gap between the struts and / or the gap between the struts and the abutment member contact surface allows the overflow cement to drain.

  One or more annular struts are radially spaced from the implant analog abutment member contact surface, i.e., spaced from the radially outermost edge of the abutment member contact surface, and the circumferentially spaced struts are circular. The one or more annular struts form a radially discontinuous prosthesis contact surface while forming a circumferentially discontinuous prosthesis contact surface.

  For example, forming a surface that exactly replicates the abutment member contact surface and the prosthetic contact surface of the implant with respect to the longitudinal axis, and then forming a circumferentially or radially extending groove in the surface. By doing so, a pillar can be formed. Alternatively, the circumferentially spaced struts may be formed by a surface that undulates in height from a maximum height to a minimum height about a longitudinal axis to form a series of struts, which surfaces are , Fits the prosthetic contact surface of the implant only at maximum height. However, the analog head includes a sidewall extending from the radially outer edge of the abutment member contact surface to the apex side, and the plurality of circumferentially spaced struts or one or more annular struts are radially spaced from the sidewall. It preferably extends in the axial and axial directions. This increases the depth of the gap located between the struts and / or between the struts and the abutment member contact surface, thus facilitating cement drainage.

  It is possible to design the struts so that the prosthetic contact surface of the implant analog is discontinuous both circumferentially and radially. For example, a plurality of circumferentially spaced struts can be provided to extend over different radial extents.

  Alternatively, this is accomplished by designing the strut (s) such that only a portion or portions of the coronal end match the prosthetic contact surface of the implant. You can In the case of one or more annular struts, this can be achieved by providing the crown end with one or more transverse grooves extending across the width of the struts. Alternatively, for a plurality of circumferentially spaced struts, each strut may have one or more transverse grooves at the coronal end, the grooves being even or variable in each strut. Are formed with a radial distance between them. However, preferably, the entire coronal end of each strut is matched to the prosthetic contact surface of the associated implant, thus forming a discontinuous prosthetic contact surface for the implant analog.

  The coronal end of the strut (s) to minimize the possibility of residual cement accumulating between the coronal end of the strut (s) and the prosthesis. Should be as narrow as possible while still providing the strength required to support the prosthesis. The strut (s) can have any shape, for example, the cross-section can be rectangular or circular, ie perpendicular to the longitudinal axis of the strut. However, at least the most coronal portion of the strut (s) preferably has a triangular cross section. This increases the strength of the stanchion (s) while forming a narrow contact surface with the prosthesis. In addition, the tapered surface of the stanchion (s) helps keep overflowing cement away from the prosthesis. The stanchions are preferably "roofed". That is, the opposing side portions of each strut are evenly tapered inward toward each other in the crown direction to form a central ridge, which forms a discontinuous prosthetic contact surface. To do.

  Support is provided to the prosthesis around the entire circumference of the implant analog if more than one annular strut is used. This is beneficial as it prevents the prosthesis from tilting out of the plane of the prosthesis contact surface. Preferably, a plurality of radially spaced annular struts, most preferably two to four radially spaced struts are provided. The struts are preferably evenly spaced in the radial direction. The provision of a plurality of annular struts ensures that the prosthesis is supported over its radial thickness and thus a tight fit over the radial width of the prosthetic contact surface of the associated implant. .

  The struts should be located at a suitable radial distance from the abutment member contact surface to allow the cement to flow freely into the gap between the abutment member contact surface and the annular strut. . The larger the gap, the less likely residual cement will accumulate between the stanchions and the prosthesis. Further, the radial inner surface of the annular strut is preferably tapered outward from the crown end toward the apex in order to keep the overflowing cement away from the prosthetic contact surface. However, leaving a large radial clearance between the abutment member contact surface and the prosthesis contact surface affects the correct alignment of the joint between the abutment member and the prosthesis in some systems. Can be given.

  Therefore, the implant analog prosthesis contact surface is preferably arranged at discrete locations around the implant analog perimeter, and the implant analog prosthesis contact surface is at least circular compared to the implant prosthesis contact surface. It is discontinuous in the circumferential direction.

  Thus, in a preferred embodiment, the implant analog prosthetic contact surface is formed by the coronal ends of a plurality of circumferentially spaced struts, the prosthetic contact surface being at least circumferentially discontinuous. It is like this.

  The circumferentially discontinuous surface makes it possible to form a discontinuous prosthetic contact surface while still providing solid support to the prosthesis at the point of attachment to the abutment member. Aids in the accurate bonding of the components of the. A further advantage of the circumferentially discontinuous prosthesis contact surface, and in particular the circumferentially spaced struts, is that the prosthesis contact surface assists in the removal of cement accumulated between the prosthesis and this surface. The ability to take advantage of circumferential discontinuities in the surface. This can be done by rotating the abutment member and thus the bonded prosthesis relative to the implant analog while placing the abutment member on the implant analog. This rotation allows the prosthetic contact surface, preferably formed by the coronal ends of the struts, which are circumferentially spaced, to scrape away residual cement on the lower surface of the prosthesis.

  The plurality of circumferentially spaced struts are preferably evenly spaced about the longitudinal axis of the implant analog. To provide suitable support for the prosthesis while minimizing contact between the implant analog and the prosthesis, the prosthesis contact surface has three to eight circumferentially spaced struts, most preferably four. It is preferably formed by columns that are circumferentially spaced. However, in other embodiments, the implant analog may have a greater number of struts, eg, 10, 12, 14, etc. struts.

  It is preferable that the surface of the analog head arranged between the columns spaced apart in the circumferential direction be curved or tapered outward in the radial direction in the apex direction. This helps keep the overflow cement away from the implant analog / prosthesis junction. Therefore, in a preferred embodiment, the side wall of the analog head from which the column projects is curved outward in the radial direction in the apical direction.

  As mentioned above, a plurality of circumferentially-spaced struts form a prosthetic contact surface that is discontinuous in both the circumferential and radial directions, for example, by forming one or more transverse grooves in each strut. May be designed to However, it is preferred that each of the circumferentially spaced struts extend the entire radial length of the prosthesis contact surface such that the entire coronal end of each struts forms the prosthesis contact surface. In this way, the prosthetic contact surface of the implant analog is discontinuous only in the circumferential direction.

  As mentioned above, in a preferred embodiment, both the abutment member contact surface and the prosthetic contact surface of the implant are circularly symmetrical about the implant's longitudinal axis and have a linear longitudinal cross section. Thus, in a particularly preferred embodiment, the coronal ends of the plurality of circumferentially spaced struts have a uniform linear longitudinal cross section.

  In accordance with the present invention, both the implant and associated implant analog have an abutment member connecting structure, the abutment member connecting structure having a crown facing abutment member contacting surface.

  In addition to the abutment member contact surface, the implant and associated implant analog abutment member connection structure may have additional features. The implant analog of the present invention is designed so that it can be placed on the implant analog in one or more of the same defined positions that the abutment member can be placed on the implant, so that the implant analog abutment member is The connecting structure matches the features of the implant abutment member connecting structure at the same position relative to the abutment member contact surface, at least to the extent necessary to enable the above. Since the abutment member connection structure of the implant analog matches the implant abutment member connection structure, any abutment member designed to be connected to the implant will be similarly applied to the associated implant analog of the present invention. Can be connected to.

  In a preferred embodiment, the implant and thus the associated implant analog abutment member connecting structure has non-through holes extending from the coronal ends of the implant and implant analog, respectively, along the longitudinal axis. The non-through hole has a threaded section. This allows the abutment member to be directly or indirectly attached to the implant and implant analog by a threaded connection. The abutment member is preferably indirectly attached to the implant and implant analog via a separate screw, thus, in such an embodiment, the abutment member of the present invention has a through bore that accommodates the screw. .

  If the implant and the associated implant analog have a non-through hole, the abutment member contact surface of the implant and thus the associated implant analog can be located within the non-through hole, for example the abutment member contact surface. Are located at the coronal ends of the non-through holes and can taper radially inward in the apical direction to form a frustoconical surface. Thus, in such an embodiment, the apex of the associated abutment member has a complementary taper that is received within the hole, the taper facing the apex of the abutment member. Form a contact portion. Alternatively, the abutment member contact surface of the implant and associated implant analog is perpendicular to the longitudinal axis and disposed within the non-through hole at a location remote from the coronal end of the hole. You can Thus, in such an embodiment, the apex of the associated abutment member has a complementary portion that is received within the hole, the complementary portion being in the longitudinal axis of the apex. Includes apical contact surface, perpendicular to the apical surface.

  However, in a preferred embodiment, the abutment member contact surface is located on the coronal outer end surface of the implant and thus the associated implant analog, whether or not the abutment member connecting structure has non-through holes. . When a blind hole is present, the implant and thus the associated abutment member contact surface of the implant analog preferably surrounds the coronal end of the blind hole. This helps to close the hole. In a particularly preferred embodiment, the abutment member contact surface of the implant and thus of the associated implant analog is perpendicular to the longitudinal axis and bounds the non-penetrating coronal end of the bore. In such an embodiment, the apical portion of the associated abutment member has an apex-extending portion housed in a blind hole of the implant and implant analog and an apical extension portion thereof. An apical-side contact surface that is adjacent to the coronal side of the apex portion and surrounds the apex-extending portion, the surface being perpendicular to the longitudinal axis of the apex portion. Preferably there is.

  Many implant systems include a non-rotating means that prevents relative rotation between the implant and the abutment member, as well as a finite number of rotational positions that the abutment member can assume relative to the implant. To set. Such non-rotating means ensure that the exact angular position of the abutment member with respect to the implant is known prior to final fixation of these components. This is especially beneficial when the implant system is intended to support a single dental prosthesis (crown). This is because this ensures a correct alignment of the prosthesis with the surrounding teeth. In addition, the non-rotating means may help prevent loosening of the abutment member during the life of the implant.

  These non-rotating means consist of complementary non-circular symmetry in the implant and abutment members, which complementary non-circular symmetry typically has a polygonal shape such as a hexagon or octagon. For example, the internal bore of the implant may have a section with a hexagonal cross section and the abutment member has a portion with an equal hexagonal cross section. Alternatively, the implant may comprise a male polygonal boss projecting from the coronal end, the male polygonal boss being in use received within a correspondingly shaped polygonal cavity within the abutment member. To be done.

  Thus, the implant abutment member connection structure, and thus the associated implant analog abutment member connection structure, preferably further comprises a non-rotating means, each non-rotating means relative to the longitudinal axis of the implant or implant analog. And has a non-circular symmetrical cross section in a vertical plane, the non-rotating means of the implant analogue has a cross-section substantially the same as the non-rotating means of the implant, so that in use the non-rotating means of the implant analogue is The abutment member can cooperate with the abutment member to position the abutment member at one or more defined angular positions relative to the same implant analog that the implant can be positioned relative to the implant. The cross section of the implant analog non-rotating means is preferably the same as the cross section of the implant non-rotating means.

  In such preferred embodiments, the preferred associated abutment member connecting structure preferably comprises non-rotating means, the non-rotating means being non-circular in a plane perpendicular to the longitudinal axis of the apex. Having a symmetrical cross-section, said non-rotating means is complementary to the non-rotating means of the implant and implant analogue, allowing abutment members to be installed on each component at one or more of the same defined angular positions . However, the connecting structure of the abutment member may alternatively have a circular symmetry part which is or can accommodate the non-rotating means of the implant and associated implant analogue. This allows the abutment member to be placed on the implant and associated implant analog in any angular orientation, as the circular symmetry does not engage the non-rotating means of the implant and implant analog. Such abutment members are used, for example, in constructing bridges or arches that are connected to multiple implants.

  The non-rotating means of the implant and implant analog, and thus also the complementary non-rotating means of the abutment member, if present, can take the form of any non-rotating means known in the art. For example, the non-rotating means may have a polygonal cross section and may include a plurality of circumferentially spaced protrusions and / or grooves.

  Both implants and implant analogs can comprise a male boss projecting from the coronal end, the non-rotating means being located on the outer surface of said boss. However, in embodiments where both the implant and the implant analog have non-through holes, the non-rotating means are preferably located on the inner surface of the holes on the crown side of the threaded section.

  In a particularly preferred embodiment, the non-rotating means of the implant and the associated implant analog have a cross-section with four-fold rotational symmetry, and abutment members with complementary non-rotating means are provided on the implant and implant analog, respectively. In contrast, they can be arranged in four discrete angular orientations. The non-rotating means preferably has a square cross section, most preferably a square cross section with rounded corners.

  As mentioned above, rotating the abutment member and prosthesis relative to the implant analog when the prosthetic contact surface of the implant analog is formed by the coronal ends of a plurality of circumferentially spaced struts. Allows the stanchions to be used to scrape residual cement from the underside of the prosthesis. This is possible even in the presence of non-rotating means on the implant analog and the abutment member. Due to manufacturing tolerances, all non-rotating connections between dental implant components allow some rotational play between the components. While it is usually desirable to maintain such play to a minimum, the present invention provides this inevitability between the implant analog and the non-rotating means of the abutment member to aid in the removal of excess cement. The error is also used. Therefore, it is preferable that the width of the crown side end of each strut that is circumferentially spaced is smaller than the width of the arc of rotational play between the implant analog and the abutment member. Thus, when the abutment member and the non-rotating means of the implant analog are engaged, the abutment member is rotated clockwise and so that the lower surface of the prosthesis is rubbed back and forth against the post of the prosthetic contact surface. Can be "wiggled" counterclockwise. This removes the cement layer that may form between the lower surface of the prosthesis and the discontinuous prosthetic contact surface.

  The play between the implant analog and the abutment member provides a greater width of travel at a greater radial distance, thus increasing the width (circumferential extent) of the coronal end of each strut radially. It will be possible. This increases the support provided by the stanchions without compromising the system's ability to completely scrape cement that has overflowed the prosthesis. However, for ease of manufacture, it is preferred that the coronal ends of each strut have a uniform width. The width of the coronal end of each strut is preferably less than 0.1 mm, more preferably less than 0.75 mm and most preferably about 0.5 mm. This is narrow enough to fit within the rotational play present in the non-rotating means of most dental implant systems.

  If the implant and thus the associated implant analogue comprises a non-rotating means with n-fold symmetry and the implant analogue's prosthetic contact surface is circumferentially discontinuous, the implant analogue's prosthetic contact surface is It is preferred to have n or 2n evenly spaced posts in the circumferential direction. This symmetry prevents or limits tilting of the prosthesis during gluing, which can occur when there is a large gap between the columns that are circumferentially spaced apart, thereby reducing the mounting of the prosthesis. The accuracy is improved.

  According to the present invention, the implant and thus the associated implant analog have a coronally facing prosthetic contact surface. The prosthesis contact surface of the implant and thus of the associated implant analog is located radially beyond the abutment member contact surface, i.e. on the radially outer surface of the abutment member contact surface. This is because, in use, the prosthesis is arranged over the abutment member, so that the prosthesis contacts the implant and thus also the implant analogue in a position radially beyond the abutment member.

  The prosthetic contact surface and abutment member contact surface of the implant and thus the associated implant analog may be axially offset from each other. For example, if the abutment member contact surfaces are formed within the blind holes of the implant and implant analog, respectively, the prosthetic contact surface may be located on the coronal outer end surface of the implant and associated implant analog. it can. In some cases, the prosthetic contact surface and the abutment member contact surface of the implant and thus also the implant analog can overlap each other in axial dimension. For example, if the abutment member contact surface is formed by a surface of a non-through hole that tapers outwardly toward the crown, the prosthetic contact surface would be at the outer coronal surface of the implant and implant analog, respectively. It may be formed by a surface that tapers outward on the apex side. However, in a preferred embodiment, the abutment member contact surface and the prosthetic contact surface of the implant and thus the associated implant analog extend in the same plane, and thus in these embodiments the prosthetic contact surface is: It can be considered as an extension of the abutment member contact surface. In a particularly preferred embodiment, both the abutment member contact surface and the prosthesis contact surface of the implant and thus of the associated implant analog are respectively perpendicular to the longitudinal axis of the implant and implant analog, respectively. They are arranged in the same axial plane on the outer surface of the crown side.

  Most commonly, the prosthetic contact surface of the implant is radially adjacent to the abutment member contact surface, which means the embodiment in which these two surfaces are axially separated from each other, or their This is also true in embodiments where the axial dimensions of the two surfaces overlap. Because, in use, when the prosthesis is adhered to the abutment member, the implant system should be designed so that there is a minimum gap between the prosthesis and the abutment member, especially at the contact point with the implant. Is preferable. In addition, the coronal end of the implant has a smooth surface to facilitate sterilization of the coronal end of the implant and to create grooves, undercuts, or other discontinuities that may form a bacterial trap. It is preferable to avoid parts. Therefore, the radially outer edge of the abutment member contacting surface of the implant is immediately adjacent to the radially inner edge of the prosthesis contacting surface and thus these surfaces are preferably in contact with each other. As mentioned above, the abutment member contact surface and the prosthesis contact surface of the implant preferably extend in the same plane. Thus, in such an embodiment, the abutment member contact surface and the prosthesis contact surface can be considered the radially inner portion and the radially outer portion, respectively, of a single surface. This is advantageous in that it allows the implant to be used with an abutment member (which does not form a part of the invention) capable of making full length contact with the single surface.

  In embodiments where the implant analog prosthetic contact surface is formed by one or more annular struts, an implant analog prosthetic contact surface and an abutment member contact surface are provided to create a gap for overflow cement. There should always be a radial gap at. However, in embodiments where the implant analog prosthesis contact surface is formed by the coronal ends of a plurality of circumferentially spaced struts, the implant analog prosthesis contact surface comprises a radial direction of the abutment member contact surface. It is possible to contact the outer edge. Thus, in such an embodiment, the implant analog prosthesis contact surface preferably extends radially outward from a radially outer edge of the abutment member contact surface. The radially outer edge of the implant abutment member contacting surface of the implant analog is immediately adjacent to the radially inner edge of the prosthesis contacting surface, and therefore these surfaces are preferably in contact with each other.

  In some preferred embodiments, the prosthetic contact surface of the implant extends to the radially outermost edge of the coronal end portion, which typically forms or is equal to the widest portion of the implant. This is especially true in the case of so-called "tissue level" implant systems, where the implant projects into the soft tissue rather than terminating at the crest of the bone. This is because it is important in such systems that there is no upper or lower overhang between the prosthesis and the implant that forms a bacterial trap and may have an unaesthetic appearance. Furthermore, the system in which the apical end of the prosthesis matches the implant footprint provides the most support for the prosthesis and provides the natural "emergency profile" of the artificial tooth. In such a preferred embodiment, the prosthetic contact surface of the associated implant analog extends to the radially outermost edge of the analog head.

  However, in a "bone level" implant system where the implant is completely embedded in the bone, the radial outermost edge of the coronal end face of the implant and the outer surface of the abutment member / prosthesis connected to the implant are In between, so-called "biological gaps" are generally left. Thus, the prosthetic contact surface of the implant may terminate radially at a point within the outer radius of the implant. However, in such systems it is common for the coronal end surface of the implant to lie radially beyond the prosthetic contact surface and form a continuation of this surface. As a result, in such an embodiment, the prosthetic contact surface of the implant analog may still extend to the radially outermost edge of the analog head. This is because this facilitates the manufacture of implant analogs, especially if circumferentially spaced struts are used. Alternatively, the prosthetic contact surface may terminate radially inside the radially outer edge of the analog head. However, in such an embodiment, the prosthetic contact surface would be provided even if the implant analog's coronal facing surface radially beyond the prosthetic contact surface does not match the equivalent portion of the implant. It is preferable to be arranged on the apex side of the radially outer edge of the. Thus, this surface does not interfere with cement discharge.

  In a particularly preferred embodiment of the present invention, the implant analog prosthesis contact surface extends from the radial outer edge of the abutment member contact surface to the radial outer edge of the analog head and has a plurality of circumferentially spaced struts. Is formed by the crown side end of the. Each strut extends the entire radial length of the prosthetic contact surface, and the entire coronal end of each strut matches the prosthetic contact surface of the implant and is circumferentially discontinuous but radial. It is preferable to form a prosthesis contact surface that is continuous with. Thus, in a particularly preferred embodiment, the prosthetic contact surface of the implant and thus of the associated implant analog is circularly symmetrical about the longitudinal axis and has a linear longitudinal cross section, so that the coronal end of each strut is Has a uniform linear longitudinal cross section.

  Additionally or alternatively, in a particularly preferred embodiment of the present invention, the coronal ends of the implant and thus of the associated implant analog are non-through holes extending along the longitudinal axis of the implant and implant analog, respectively. Have. The abutment member contact surface of each component is immediately adjacent to the crown side end of the non-through hole, surrounds the crown side end, and is continuous in the circumferential direction extending perpendicularly to the longitudinal axis. And the prosthetic contact surface of the implant and associated implant analog forms a continuation of the abutment member contact surface, which surface also extends perpendicular to the longitudinal axis of each component. It is like this. The prosthetic contact surface of the implant is circumferentially continuous and the prosthetic contact surface of the implant analog is formed by the coronal ends of a plurality of circumferentially spaced struts.

  According to the invention, the implant analogue has a non-rotating part on the outer surface for non-rotatably fixing the implant analogue in the dental model. The implant analog may be intended to be permanently fixed or removably fixed in the model. In addition to direct (permanent or removable) fixation within the gypsum model, the implant analog can also be intended to be indirectly fixed within the gypsum model. For example, the implant analog may be intended for use in combination with a sleeve. The sleeve is permanently embedded in the model and the implant analog is removably inserted within the sleeve.

  The non-rotating portion is preferably arranged on the apical side of the analog head, and may extend to the apical end of the implant analog, or may extend along only a part of the implant analog. Good. When the implant analog is intended to be permanently fixed to the model, the outer surface of the implant analog typically has one or more grooves that extend wholly or partially around the circumference of the implant analog. These grooves form an undercut, into which the modeling material spreads and hardens, thus holding the implant analogue axially immobile. If the implant analog is intended to be removably secured directly to the model, no undercut will be formed. Instead, the radial dimension of the entire non-rotating portion and any portion of the implant analog on the apical side of this section is kept constant or reduced in the apical direction. This allows the implant analog to be withdrawn and reinserted into the model. Depending on the design of the sleeve, the implant analogue allows a snap fit between the sleeve and the implant analogue, if the implant analogue is intended to be indirectly removably fixed to the model, for example via the sleeve. It is possible to have a small undercut. Such a snap fit provides audible and / or tactile feedback to inform the user that the implant analog has been properly placed in the sleeve. However, this is only possible if the snap-fit connection formed is flexible enough to allow engagement and disengagement of the undercut so that the implant analog can be removed.

  In either case, the non-rotating portion of the implant analog preferably has at least one axially extending flat surface, more preferably four flat surfaces evenly spaced about the longitudinal axis. The one or more flat surfaces can taper inward in the apical direction, but preferably the one or more flat surfaces extend parallel to the longitudinal axis of the implant analog.

  The implant analogs of the present invention are preferably made from metallic materials such as titanium alloys, eg TAN, or stainless steel. However, the implant analogs of the present invention can also be formed from ceramics or suitable polymers such as PEEK.

  The implant of the present invention can be formed of any known suitable material, such as titanium or zirconium. However, it is preferred that the implant be made of a ceramic material such as zirconia, preferably stabilized zirconia, most preferably yttrium stabilized zirconia.

  The implant has an outer surface for fixation within the bone and osseointegration. The outer surface preferably has threads for fixing the implant in the bone. The thread may extend the entire length of the implant or may extend over only a portion of the implant, preferably at least the middle half of the implant. The implant surface may alternatively or additionally be roughened and / or have a coating, for example by acid etching and / or sandblasting, in order to improve the bone-bonding properties of the implant.

  As mentioned above, the abutment member designed to be connected to the implant of the present invention has the same abutment member connecting structure as that of the implant and the implant analog, and thus is also applicable to the implant analog of the present invention. It can be connected in the same way.

  The implant system of the invention can comprise any known implant and abutment member, wherein the abutment member contact surface does not contact the entire radial extent of the coronal end of the implant, Therefore, leaving a portion of the surface exposed forms the prosthetic contact surface on the implant. The idea of the invention is not to exactly duplicate this prosthetic contact surface, but instead to provide an implant analogue provided with a discontinuous surface in order to allow the discharge of the cement.

  Therefore, according to a further aspect, the invention provides an implant analogue for use in the dental implant system described above. In a particularly preferred embodiment, the invention is an implant analog, which extends along the longitudinal axis from the apical end to the coronal end, the implant analog comprising a non-rotating part. An outer surface comprising a non-rotating portion having a non-circular symmetrical cross-section in a plane perpendicular to the longitudinal axis for non-rotationally fixing in a dental model, and a crown end of an implant analog. And an analog head disposed on the abutment member coupling structure that cooperates with the abutment member so that the abutment member can be installed on the implant analog at one or more prescribed positions. The abutment member connection structure includes a crown-side abutment member contact surface, and a crown-side abutment. The material contact surface directly contacts the abutment member in use and provides a stop that defines the axial position of the abutment member relative to the implant analog, the abutment member contact surface being circularly symmetrical about the longitudinal axis. Continuous in the circumferential direction and having a linear longitudinal cross section, the analog head is a crown-facing prosthetic contact surface, the prosthetic contact surface contacting a dental prosthesis, the surface comprising: Located radially beyond the abutment member contact surface, is circularly symmetric about the implant analog longitudinal axis and has a linear longitudinal cross-section, the prosthetic contact surfaces being circumferentially spaced Further comprising a coronal facing prosthetic contact surface formed by the coronal ends of the plurality of struts or the coronal ends of one or more annular struts radially spaced from the abutment member contacting surface. To provide a down plant analog.

  The implant analog is intended for use in the dental implant system of the invention and may have any or all of the preferred features listed above for implant analogs.

  According to a further aspect, the invention provides a combination of an implant analog and an abutment member, the implant analog extending along the longitudinal axis from the apical end to the coronal end. The analog is placed on the outer surface including the non-rotating part having a non-circular symmetrical cross-section in a plane perpendicular to the longitudinal axis and on the coronal end of the implant analog for non-rotating fixation in the dental model. An analog head, wherein the analog head is an abutment member connection structure that cooperates with an abutment member so that the abutment member can be installed in an implant analog, the abutment member connection structure being A crown-side abutment member contact surface is provided, and the crown-side abutment member contact surface is an abutment member during use. An abutment member comprising a stop that directly contacts and defines an axial position of the abutment member with respect to the implant analog, the abutment member contact surface being circumferentially continuous; Has a root apex and a crown, at least the root apex extending along the longitudinal axis, said root apex comprising a connecting structure that cooperates with an implant analog abutment member connecting structure. And the connecting structure is an apical-sided contact surface, the apical-sided contact surface is in direct contact with the abutment member contact surface of the implant analog, and the axial position of the abutment member with respect to the implant analog. The apical lateral contact surface is complementary to the abutment member contact surface of the implant analog and is circumferentially continuous. An implant analog analog head is a coronally facing prosthesis contact surface, the prosthesis contact surface contacting a dental prosthesis, wherein the surface comprises a radial abutment member contact surface. And the prosthetic contact surface is at the crown side end of a plurality of circumferentially spaced struts or the crown side of one or more annular struts radially spaced from the abutment member contact surface. When the abutment member is placed on the implant analog, the apex-facing contact surface of the abutment member is provided around the entire circumference of the implant analog, further comprising a coronally facing prosthetic contact surface formed by the ends. Contacting the implant analog abutment member contact surface at, the abutment member being disposed radially inward of the prosthetic contact surface and not contacting the prosthetic contact surface. A combination of a log and an abutment member is provided.

  Implant analogs and abutment members can have any or all of the preferred features mentioned above. In particular, the abutment member contact surface, prosthetic contact surface, and apical contact surface are all preferably circularly symmetrical about the longitudinal axis of the component and have a linear longitudinal cross section.

  The implant analogue of the invention makes it possible to achieve a close contact between the implant and the prosthesis adhered to the abutment member extraorally.

  Therefore, preferably, the system further comprises a dental prosthesis, the dental prosthesis having an abutment member connection structure for securing the prosthesis to the crown of the abutment member in one or more defined positions. , The prosthesis further comprises an apical side facing implant contact surface, the surface being complementary to the prosthetic contact surface of the implant and implant analog, and thus the prosthesis via the abutment member connection structure. When the abutment member is placed on the implant, the implant contact surface of the prosthesis contacts the prosthetic contact surface of the implant around the entire circumference of the implant, and the prosthesis is abutment member. When it is connected to the abutment member via the connection structure and the abutment member is installed on the implant analog Implant contacting surface of the prosthesis contacts the entire surface of the discontinuous prosthesis contact surface of the implant analog.

  Because the prosthetic contact surface of the implant analog of the present invention is discontinuous, the implant analog, at least alone, does not allow the wax up of the prosthesis to be built up on this surface. Thus, implant analogs can be used in combination with suitable burnout copings to form wax-ups of prostheses.

  Alternatively, the implant analog of the invention can be provided in combination with a second implant analog. The second implant analog extends along the longitudinal axis from the apical end to the coronal end, and the second implant analog is an outer surface including a non-rotating portion, the non-rotating portion comprising: An outer surface having a non-circular symmetrical cross-section in a plane perpendicular to the longitudinal axis for non-rotatably fixing in a dental model, and an analog head arranged at the coronal end of the second implant analog Wherein the analog head comprises an abutment member connection structure, the abutment member connection structure comprising one or more provisions on the same second implant analog on which the abutment member can be placed on the implant analog. Cooperating with the abutment member so that the abutment member can be installed in position, the abutment member connecting structure includes a crown-side abutment An abutment member contacting surface that directly contacts the abutment member in use and provides a stop that defines an axial position of the abutment member relative to the second implant analog. , The abutment member contact surface is continuous in the circumferential direction, the analog head further has a crown side prosthetic contact surface for contacting a dental prosthesis, the crown side prosthetic contact surface, Radially beyond the abutment member contact surface, the second implant analog abutment member connection structure and prosthesis contact surface are disposed around the entire circumference of the second implant analog abutment member abutment member. It conforms to the connection structure and the prosthesis contact surface, thus the prosthesis contact surface is circumferentially continuous.

  Therefore, the second implant analog is consistent with standard prior art implant analogs in that the prosthetic contact surface of the implant analog is identical to the associated implant. Thus, the prosthesis can be designed and made with reference to this second implant analog prior to bonding it to the abutment member using the implant analog of the present invention.

  The second implant analog can be permanently placed in the same model, but separately from the implant analog of the present invention, or more preferably, both implant analogs can be removably placed in the same model. it can.

  In a particularly preferred embodiment, the dental implant system further comprises a sleeve configured to be permanently fixed to the dental model, the inner surface of the sleeve being complementary to the non-rotating part of the implant analog and preferably the second implant analog. The implant analog, and preferably the second implant analog, is non-rotatably and removably insertable into the sleeve. This allows the dental technician to easily replace the implant analog.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 7 shows a longitudinal cross section of a prior art implant analog combined with an abutment member and a prosthesis. 1B illustrates a longitudinal cross-section of the abutment member and prosthesis of FIG. 1A connected to a dental implant. 1 is a perspective view of a prior art implant analog component. FIG. 6 is a perspective view of a further prior art implant analog component. FIG. 3 is a perspective view of an implant associated with the implant analog of FIGS. 2A and 2B. 2B is a top plan view of the implant analog of FIGS. 2A and 2B and the implant of FIG. FIG. 3 is a perspective view of an abutment member suitable for use with the implant analog of FIGS. 2A and 2B and the implant of FIG. 2C. 2B is a perspective view of the implant analog of FIG. 2A in combination with the abutment member of FIG. 4. 1 is a perspective view of an implant analog according to one embodiment of the present invention. FIG. 7 is a plan view of the implant analog of FIG. 6. It is a figure which shows the detail X of FIG. 8 is a longitudinal cross-section of the implant analog of FIG. 6 in combination with the abutment member of FIG. 4, taken along line AA of FIG. 7. FIG. 9 is a perspective view of the combination of FIG. 8. FIG. 10 shows the combination of FIG. 9 with a prosthesis connected to the abutment member. FIG. 7 is a perspective view of a sleeve that can be used with the implant analog of FIG. 6 if desired. It is a figure which shows the longitudinal cross section of the sleeve of FIG.

  As mentioned above, FIGS. 1A and 1B illustrate problems that may occur when using standard prior art implant analog 10 to bond with abutment member 20 and prosthesis 30.

This standard implant analog 10 is shown in more detail in Figure 2A. The implant analog 10 extends from the apical end 11 along the longitudinal axis L _A to coronal end 12. The outer surface of the implant analog 10 has a non-circularly symmetric non-rotating portion 13. This section 13 is formed by an axially extending flat surface 14 of the sidewall of the implant analog 10, which flat surface extends parallel to the longitudinal axis L _A. These surfaces 14 directly or indirectly rotationally secure the implant analog 10 within the model of the patient's mouth. Since the non-rotating part 13 and the outer surface of the implant analog 10 on the apical side of this section 13 do not include an undercut part, the implant analog 10 can be removably fixed to the model.

FIG. 2B shows an alternative form of known implant analog 10a. The implant analog 10a is designed to be permanently fixed in the dental model. Similar features are indicated by similar reference numbers. In contrast to the implant analog 10, the non-rotating portion 13a is formed by a groove 14a of the side wall of the implant analog 10a, groove 14a extends perpendicularly to the longitudinal axis _{L A.} The groove 14a is substantially circular and forms an undercut portion in the implant analog 10a. Therefore, once the model material has hardened in these undercuts, the implant analog 10a cannot be removed from the model and is securely held in place within the model.

The analog heads 15,15a are located at the coronal ends 12,12a of both implant analogs 10,10a, but are shown in more detail in Figure 2B. The analog head 15, 15a has an internal blind hole 16, 16a, which extends in the implant analog 10, 10a along the longitudinal axis L _A. Non-through holes 16,16a is provided with anti-rotation means 17, 17a, the anti-rotation means 17, 17a is the portion of the form of said holes having a non-circular symmetrical cross-section in a plane perpendicular to the longitudinal axis _{L A} . In this embodiment, the cross section of the non-rotating means 17, 17a is a square with rounded edges, but any known implant non-rotating means can be used. On the apex side of the non-rotating means 17, 17a, the non-through holes 16, 16a further have a threaded section 19, 19a, which is best seen in FIG. .

Coronal end surface 18,18a of both the implant analog 10,10a is flat and is perpendicular to the longitudinal axis _{L A.} The end faces 18, 18a form shoulders. An abutment member and a prosthesis can abut on the shoulder, and the shoulder extends from the crown side end of the non-through holes 16, 16a to the outermost radial edge of the analog head 15, 15a. .

Both implant analogs 10, 10a are associated with the dental implant body 1 shown in Figure 2C. That is, both implant analogs 10, 10a are designed to replicate the dental implant body 1 within the physical model of the patient's mouth. The dental implant body 1 extends from the apical end 101 to the crown end 102 along the longitudinal axis L _I. The outer surface of the dental implant body 1 has threads for fixing the implant in the bone, which threads are shown in FIG. 1B.

The coronal end portion 105 of the dental implant body 1 comprises a non-through hole 106, which comprises a non-rotating means 107 and a threaded section 109 arranged on the apex side of the non-rotating means 107. Have. The coronal end surface 108 of the implant is perpendicular to the longitudinal axis L _I , but in other implant systems this surface may be wavy or corrugated, whether tapered apically or coronally. An inclined surface may be formed.

  The implant analog 10, 10a is designed to exactly replicate the non-through hole 106, the non-rotating means 107 and the coronal end face 108 of the dental implant body 1. Therefore, as can be seen from FIG. 3, the implant analog 10, 10a and the dental implant body 1 are identical when viewed from the coronal end.

FIG. 4 shows the abutment member 20. The apex portion 20 a of the abutment member 20 has a connection structure portion 22 that connects the abutment member 20 to the dental implant body 1. The connecting structure 22 has a non-rotating means 23, which has a non-circular symmetrical cross section in a plane perpendicular to the longitudinal axis L _B of the abutment member 20. The non-rotating means 23 is complementary to the non-rotating means 107 of the dental implant body 1, and thus also to the non-rotating means 17, 17a of the associated implant analogue 10, 10a. This allows the abutment member 20 to be inserted into the non-through hole 106 of the dental implant body 1 or the holes 16, 16a of the associated implant analog 10, 10a and held rotationally fixed. The connecting structure 22 also has an apical side facing contact surface 24 formed on the lower side of the annular shoulder 21. This contact surface 24 is intended to axially position and secure the abutment member 20 with respect to the implant analogue 10, 10 a and the dental implant body 1, the coronal end face 108 of the dental implant body 1 and thus the associated implant analogue. It contacts 10, 10a equal surfaces 18, 18a.

  The crown portion 20b of the abutment member 20 comprises a second non-rotating means 25, which in this embodiment has four evenly spaced radial projections 26, This allows the abutment member 20 to be rotationally fixed and connected to the prosthesis. The abutment member further comprises a threaded bore 27 that allows attachment of the abutment member 20 to the dental implant body 1 or implant analog 10, 10a using a separate threaded component 40. It will be possible.

  FIG. 5 shows abutment member 20 connected to implant analog 10 by screws 40. As can also be seen in FIG. 1A, the abutment member shoulder 21 has a smaller radius than the coronal end face 18, so that the outer portion of this surface 18 remains exposed. Accordingly, the inner regions of the coronal end surfaces 108, 18, 18a of the dental implant body 1 and associated implant analogs 10, 10a are abutment member contact surfaces 28, 28a, 128, as can be seen in FIG. To form. The abutment member contact surfaces 28, 28a, 128 and the apex-facing contact surface 24 of the abutment member 20 are complementary to each other so that continuous contact is formed about the outer circumference of the component. is there.

  The outer region of the coronal end surface 18 forms the prosthetic contact surface 29 of the implant analog 10. This surface is circumferentially and radially continuous and exactly matches the prosthetic contact surface 129 of the associated dental implant body 1 so that the prosthesis of the implant analog 10 as shown in FIG. 1B. Due to the residual cement accumulated on the contact surface, the problem arises that a gap G may be formed between the dental implant body 1 and the prosthesis 30.

  In this embodiment, the abutment member contact surface 128 and the prosthesis contact surface 129 of the dental implant body 1 are formed by the same flat horizontal surface, and thus the prosthesis contact surface 129 is an extension of the abutment member contact surface 128. Is. However, these surfaces may differ from each other. For example, looking at FIG. 3, at the dashed line indicating the boundary between the abutment member contact surface 128 and the prosthesis contact surface 129, the surface 108 begins to taper downwards, resulting in a frustoconical prosthesis contact surface. 129 may be formed. Alternatively, the abutment member contacting surface 128 may be formed by the conical tapered inner wall of the hole 106, with the prosthetic contacting surface 129 extending planarly from the boundary of the hole 106. Alternatively, it extends in the taper direction.

  6 and 7 show an implant analog 50 according to the present invention. The implant analog extends along the longitudinal axis L from the apical end 51 to the crown end 52 and comprises a non-rotating part 53 on the outer surface. In this embodiment, this non-rotating part is formed by four flat, axially extending surfaces 54, which are evenly spaced about the longitudinal axis L and with respect to the longitudinal axis L. Extend in parallel. These surfaces 54 form a non-circular symmetrical cross section in a plane perpendicular to the longitudinal axis L and allow the implant analog 50 to be rotationally fixed directly or indirectly in the dental model.

  The analog head 55 is provided on the crown side end 52 of the implant analog 50 on the crown side of the non-rotating portion 53. The analog head 55 has a non-through hole 56 extending along the longitudinal axis L. The non-through hole 56 comprises a non-rotating means 57, which is in the form of a part of a hole having a non-circular symmetrical cross section in a plane perpendicular to the longitudinal axis L. In the present embodiment, the cross section of the non-rotating means 57 is a quadrangle having round edges. On the apex side of the non-rotating means 57, the non-through hole 56 further comprises a threaded section 59.

  The crown side end of the non-through hole 56 is surrounded by the abutment member contact surface 58. The abutment member contact surface 58 is a flat surface that extends perpendicular to the longitudinal axis L in the present embodiment. Immediately adjacent to the radially outer edge of the abutment member contact surface 58, a discontinuous prosthesis contact surface 60 extends to the radially outermost edge of the analog head 55. Unlike prior art implant analogs where the prosthetic contact surface is continuous both circumferentially and radially, the prosthetic contact surface 60 of the implant analog of the present invention has teeth of a plurality of struts 61 that are circumferentially spaced. It is formed by the crown end. As a result, a gap is formed between the columns 61. In the present embodiment, each strut 61 extends the entire radial length of the prosthesis contact surface 60. The four columns 61 are provided at equal intervals around the longitudinal axis L. The struts 61 are angularly aligned with the non-rotating means 57, but in other embodiments, more, eg eight, or fewer, evenly spaced struts may be provided.

  The columns 61 extend from the side walls 63 in the axial direction and the radial direction. The portion of the pillar 61 closest to the crown has a triangular cross section. In particular, the pillars 61 have a roof shape, and the respective side portions of the pillars 61 are evenly tapered inward toward each other in the crown direction to form the central ridge portion 62. The ridges 62 are as narrow as possible so as to prevent or at least limit the accumulation of cement in these ridges 62. The ridge 62 forms the prosthesis contact surface 60. The side wall 63 between the columns 61 of the analog head 55 is curved radially outward in the apical direction in order to keep the overflowing cement away from the coronal end of the implant analog 50.

The implant analog 50 is designed to be used with the dental implant body 1. Therefore, the abutment member connecting structure of the implant analog 50 including the non-through hole 56 matches the abutment member connecting structure of the dental implant body 1. The abutment member contact surface 58 conforms to the abutment member contact surface 128, so that the abutment member contact surface 58 extends longitudinally at the same radial position with respect to the longitudinal axis L as the abutment member contact surface 128 with respect to the axis L _I. A flat surface perpendicular to the axis L is formed. Abutment member contact surface 58 extends around the entire circumference of implant analog 50. The prosthetic contact surface 60 also matches the prosthetic contact surface 129 of the dental implant body 1, so that the prosthetic contact surface 60 is the same as the prosthetic contact surface 129, which in this embodiment is flat and with respect to the longitudinal axis L. Has a vertical longitudinal cross-section and additionally has the same axial position relative to the longitudinal axis L and the abutment member contact surface 58 as the portion of the prosthesis contact surface 129 relative to the longitudinal axis L _I and the abutment member contact surface 128. And take a radial position. However, unlike prior art implant analogs, the prosthetic contact surface 60 of the implant analog 50 is circumferentially spaced such that the prosthetic contact surface 60 is discontinuous relative to the implant prosthetic contact surface 129. It only fits the prosthetic contact surface 129 of the dental implant body 1 in the defined position.

In the present embodiment, the abutment member contact surface 128 and the prosthesis contact surface 129 of the dental implant body 1 and thus the abutment member contact surface 58 and the prosthesis contact surface 60 of the implant analog 50 are both flat and their respective longitudinal axes. It is perpendicular to L _I and L. However, the abutment member contact surface 58 and the prosthesis contact surface 60 of the implant analog 50 may be designed to match any shape of the abutment member contact surface 128 and the prosthesis contact surface 129 of the dental implant body 1. it can.

  8 shows the abutment member 20 of FIG. 4 in combination with the implant analog 50 in a longitudinal cross-section along line AA of FIG. Here, the different radial extents of the abutment member contact surface 58 and the prosthesis contact surface 60 can be clearly seen. Furthermore, the apical-facing contact surface 24 of the abutment member 20 is in full contact with the abutment member contact surface 58 of the implant analog 50, while the prosthesis contact surface 60 extends beyond this abutment member contact surface 58. It can be seen that it remains exposed. Therefore, since the abutment member connecting structure of the implant analog 50 including the abutment member contacting surface 58 matches the abutment member connecting structure of the dental implant body 1 including the abutment member contacting surface 128, the abutment member 20 is It can be installed on the implant analogue 50 in the same way as it is installed on the dental implant body 1.

  As best seen in FIG. 9, the abutment member shoulder 21 completely covers the abutment member contact surface 58 around the entire circumference of the implant analog 50, thus closing the non-through hole 56. Prevent cement from entering this hole. The circumferentially spaced struts 61 extend radially beyond the abutment member 20 and form a discontinuous prosthetic contact surface 60. Therefore, a prosthesis having a cavity suitable for accommodating the crown portion of the abutment member 20 can be arranged to cover the abutment member 20 until it abuts the prosthetic contact surface 60. This surface 60 conforms to the prosthetic contact surface 129 of the dental implant body 1 and thus positions the prosthesis accurately with respect to the abutment member 20 and supports the prosthesis when adhered to the abutment member. The cement that overflows from the abutment member / prosthesis joint flows down the curved sidewall 63 between the posts 61 of the analog head 55. The struts 61 are sufficiently narrow so that residual cement accumulated in the ridge 62 can be scraped off by "wiggling" the abutment member within the non-through holes 56.

  FIG. 10 shows a combination of FIGS. 8 and 9 with the prosthesis 70. The prosthesis 70 completely encloses the abutment member 20 and a single joint is visible outside the system. The prosthesis 70 contacts the implant analog 50 only at the discontinuous prosthesis contact surface 60 formed by the struts 61 so that the cement can be easily drained from the underside of the prosthesis 70. . Thus, when the abutment member prosthesis unit is placed on the dental implant body 1, the lower surface of the prosthesis fits snugly on the prosthetic contact surface 129 of the dental implant body 1 around the entire circumference and closes the implant system. To do.

  The implant analog 50 is designed so that it can be placed directly or indirectly on the dental model. The non-rotating portion 53 of the implant analog 50 and the apex-side portion of the non-rotating portion 53 have a uniform radius or a radius that decreases toward the apex side, and no undercut portion is formed. This allows the implant analog 50 to be removably positioned in the model, but in an alternative embodiment, the implant analog 50 is similar to the implant analog 10a of FIG. 2B permanently fixed in the model. Non-rotating means 13a can be provided.

  A sleeve 80 that can be used with the implant analog 50 is shown in FIGS. The outer surface of the sleeve has a plurality of grooves 81 and depressions 82 that form an undercut that secures the sleeve 80 in the cured model material. The sleeve has a blind hole 83, the shape of the blind hole 83 being complementary to the contours of the non-rotating part 53 and the apex of the implant analog 50. In particular, the non-through hole 83 of the sleeve 80 has four flat surfaces 84 corresponding to the flat surfaces 54 of the implant analog 50, thus allowing the implant analog 50 to be non-rotatably secured within the sleeve. To do. The implant analog 50 can be inserted into and removed from the sleeve 80 whenever needed.

  The sleeve 80 and implant analog 50 of the present invention can be used in combination with the conventional implant analog of Figure 2A. The implant analog of FIG. 2A can be inserted into sleeve 80 and abutment member 20 coupled to sleeve 80 during fabrication of prosthesis 70. Thus, the prosthesis can be made to have a lower surface that matches the continuous prosthetic contact surface 29 formed by the coronal end 18 of the implant analog 10. Once the prosthesis is ready to be bonded to the abutment member, implant analog 10 can be removed from sleeve 80 and replaced with implant analog 50. The abutment member is screwed onto the implant analog 50 and the prosthesis 70 is pressed against the discontinuous prosthetic contact surface 60 to prevent residual cement buildup.

  Once glued together, the abutment member prosthesis unit can be screwed onto the associated dental implant body 1.

  The embodiments described above are for illustration purposes only and a person skilled in the art will recognize that alternative configurations are possible which fall within the scope of the claims. For example, in other embodiments, the discontinuous prosthetic surface of the implant analog may be formed by one or more annular struts radially spaced from the radially outer edge of the abutment member contact surface. The abutment member contact surface and / or prosthesis contact surface of the implant and implant analog may each be tapered in either the crown direction or the apical direction, or may be located in different planes. These surfaces may be wavy or sloped. An implant analog having a discontinuous prosthesis contact surface and a continuous abutment member contact surface according to the present invention may be any known dental implant system in which both the abutment member and the prosthesis are intended to abut the implant. Can be made. Further, the present invention is specific to any non-rotating connection between a prosthesis and an abutment member, an abutment member and an implant analog / implant, or an implant analog and a sleeve / dental model. It is not limited to the non-rotating means of the form. Any known non-rotating means can be used within the scope of the invention.

Claims (19)

A dental implant system comprising a dental implant body (1) and an associated implant analog (50),
The dental implant body extends apical end along a longitudinal axis (L _I) from (101) to the coronal end (102),
The dental implant body has an outer surface for fixation into bone and osseointegration,
A crown end portion (105) having an abutment member connection structure, wherein the abutment member connection structure allows the abutment member to be attached at one or more defined locations on the dental implant body. And a coronal end portion (105) which is a structure for cooperating with the ment member,
The abutment member connection structure is an abutment member contact surface (128) that extends around the entire circumference of the dental implant body and is in direct contact with the abutment member when in use, A crown-facing abutment member contact surface (128) that provides a stop that defines the axial position of the abutment member;
The coronal end portion is a coronally facing prosthesis contact surface (129) radially disposed beyond the abutment member contact surface and extends around the entire circumference of the dental implant body. Further having an extending continuous surface of the crown facing prosthetic contact surface (129),
The associated implant analog (50) extends from the apical end (51) to the coronal end (52) along the longitudinal axis (L),
The associated implant analog (50) comprises an outer surface comprising a non-rotating portion (53) having a non-circular symmetrical cross section in a plane perpendicular to the longitudinal axis for non-rotational fixation in a dental model;
An analog head (55) arranged at the coronal end of the implant analog,
Equipped with
The analog head comprises an abutment member connection structure for cooperating with the abutment member so that the abutment member can be mounted at the same one or more defined locations on the implant analog.
The abutment member connection structure provides an abutment member contact surface (58) that is in direct contact with the abutment member in use and defines a stop that defines an axial position of the abutment member relative to the implant analog. A crown-side abutment member contact surface (58),
The analog head further has a crown side facing prosthesis contact surface (60) arranged at a position radially beyond the abutment member contact surface,
The abutment member contact surface of the implant analog is such that the abutment member contact surface of the implant analog matches at least a portion of the abutment member contact surface of the dental implant body about the entire circumference thereof. Having the same longitudinal cross section and radial position with respect to the longitudinal axis as at least a portion of the abutment member contact surface of the dental implant body around the entire circumference of the implant analog,
The coronal prosthetic contact surface of the implant analog is such that the coronal prosthetic contact surface of the implant analog matches one or more portions of the coronal prosthetic contact surface of the dental implant body. So that the position of the dental implant body relative to the abutment member contact surface and the longitudinal axis is the same longitudinal section as one or more portions of the crown-facing prosthetic contact surface. Have,
The coronally facing prosthetic contact surface of the implant analog is located at discrete locations around a circumference of the implant analog and / or at least one radial position away from the abutment member contact surface of the implant analog. Therefore, as compared to the coronal prosthetic contact surface of the dental implant body, the coronal prosthetic contact surface of the implant analog is discontinuous at least circumferentially and / or radially. There is a dental implant system. The dental implant system further comprises an abutment member (20) having an apex (20a) and a crown (20b), at least the apex extending along a longitudinal axis (L _B ). ,
The root apex portion allows the dental implant body (1) and the implant to be placed such that the abutment member can be installed at the same one or more prescribed positions both on the dental implant body and on the abutment member. An analog (50) abutment member connection structure cooperating with the connection structure part (22),
The connection structure is an apical contact surface (24), the apical contact surface being in direct contact with the abutment member contact surface, and the contact structure for the dental implant body and the implant analog. Complementary to the abutment member contact surfaces (128, 58) of the dental implant body and the implant analog so as to define the axial position of the abutment member, the apical side-facing surface being: A contact surface (24) facing the apex, which is continuous in the circumferential direction,
When the abutment member is installed on the dental implant body, the apical side contact surface of the abutment member is the abutment member contact surface of the dental implant body around the entire circumference of the dental implant body. The abutment member is disposed radially inward of the crown-facing prosthesis contact surface (129) such that the crown-facing prosthesis contact surface remains exposed.
When the abutment member is installed on the implant analog, the apical contact surface of the abutment member contacts the abutment member contact surface of the implant analog around the entire circumference of the implant analog. , The abutment member is radially inward of the coronal prosthetic contact surface (60) of the implant analog such that the coronal prosthetic contact surface of the implant analog remains exposed. And wherein the abutment member is in contact with the crown-facing prosthetic contact surface of the implant analog when in contact with the dental implant body when placed on the dental implant body. The dental implant system according to claim 1, wherein the dental implant system takes the same position as it takes relative to a surface.   The abutment member contact surface (128) of the dental implant body (1) and the abutment member contact surface (58) of the implant analog (50) are all linear in longitudinal cross-section. Dental implant system according to.   The abutment member contact surface (128) of the dental implant body (1) and the abutment member contact surface (58) of the implant analog (50) are respectively of the longitudinal axis of the dental implant body and the implant analog. 4. Dental implant system according to claim 1, 2 or 3, which is circularly symmetrical around.   The coronal prosthetic contact surface (129) of the dental implant body (1) and the coronal prosthetic contact surface (60) of the implant analog (50) are linear in longitudinal cross section, Dental implant system according to any one of claims 1 to 4.   The coronal prosthetic contact surface (129) of the dental implant body (1) and the coronal prosthetic contact surface (60) of the implant analog (50) are the dental implant body and the implant, respectively. Dental implant system according to any one of the preceding claims, which is circularly symmetrical about the longitudinal axis of the analog.   The coronal prosthetic contact surface (60) of the implant analog (50) is from the coronal ends of a plurality of circumferentially spaced struts (61) or the abutment member contact surface (58). 7. Dental implant system according to any one of the preceding claims, formed by the coronal ends of one or more radially spaced annular struts.   The analog head (55) includes a side wall (63) extending from a radially outer edge of the abutment member contact surface (58) toward the apex side, and a plurality of columns (61) spaced in the circumferential direction. The dental implant system of claim 7, or wherein one or more annular struts extend radially and axially from the sidewall.   The coronal prosthetic contact surfaces (60) of the implant analog (50) are circumferentially spaced so that the coronal prosthetic contact surfaces are discontinuous at least in the circumferential direction. Dental implant system according to claim 7 or 8, formed by the coronal ends of a plurality of struts (61).   Each circumferentially-spaced strut (61) extends the full radial length of the crown-facing prosthetic contact surface (60) of the implant analog (50), and each crown-side end of each strut (61). 10. The dental implant system of claim 9, wherein the dental implant system in its entirety forms the crown facing prosthetic contact surface.   The width of the coronal end of each circumferentially spaced strut (61) is less than the width of the arc of rotational play between the implant analog (20) and the abutment member (50). Dental implant system according to claim 9 or 10 when dependent on claim 2.   The radially outer edge of the abutment member contact surface (58) of the implant analog (50) is immediately adjacent to the radially inner edge of the coronally facing prosthetic contact surface (60), and thus these surfaces Dental implant system according to claim 9, 10 or 11, wherein the teeth are in contact with each other.   13. The crown proximate prosthetic contact surface (60) of the implant analog (50) extends to the radially outermost edge of the analog head (55). Dental implant system. The abutment member connection structure of the dental implant body (1) and the abutment member connection structure of the implant analog (50) have non-through holes (106, 56), and the non-through holes (106, 56). ) extends from said longitudinal axis (L _I, each of the dental implant body and the coronal end of the implant analog along _L) (101,51), the non-through hole is threaded Dental implant system according to any one of claims 1 to 13, each having a section (109, 59). Said abutment member connection structure of the dental implant body (1) further comprises anti-rotation means (107), said anti-rotation means (107), said longitudinal axis of said dental implant body relative to (L _I) Having a non-circular symmetric cross-section in a vertical plane, the abutment member connection structure of the implant analog (50) further comprises a non-rotating means (57), the non-rotating means (57) comprising: A non-circular symmetrical cross section in a plane perpendicular to the longitudinal axis (L), the non-rotating means of the implant analogue having the same cross section as the non-rotating means of the dental implant body. The dental implant according to claim 1.   The abutment member contact surface (128) and the coronal prosthetic contact surface (129) of the dental implant body (1) extend in the same plane, and the abutment of the implant analog (50). Dental implant system according to any one of the preceding claims, wherein the member contact surface (58) and the crown-facing prosthetic contact surface (60) extend in the same plane. The dental implant system further comprises a dental prosthesis (70), the prosthesis (70) having the prosthesis in one or more defined positions on the crown portion (20b) of the abutment member (20). ), The prosthesis further comprises an apical side facing implant contact surface, the surface being the coronal side facing prosthesis of the dental implant body (1). Complementary to the contact surface (129) and the coronally facing prosthetic contact surface (60) of the implant analog (50), and
When the prosthesis is connected to the abutment member via the abutment member connection structure, and the abutment member is installed on the dental implant body, the contact surface of the prosthesis is the entire surface of the dental implant body. Contacting the crown sideward prosthesis contact surface around the circumference,
When the prosthesis is connected to the abutment member via the abutment member connection structure, and the abutment member is installed on the implant analog, the coronal-facing prosthesis contact surface is unimpaired with the implant analog. 17. Dental implant system according to any one of claims 1 to 16 when dependent on claim 2, contacting the entire surface of the crown facing prosthetic contact surface which is continuous. An implant analog (50) for use in a dental implant system according to any one of claims 1 to 17, wherein the implant analog is an apical end (51) along a longitudinal axis (L). To the coronal end (52), the implant analog
An outer surface comprising a non-rotating part (53), said non-rotating part (53) having a non-circular symmetrical cross section in a plane perpendicular to said longitudinal axis for non-rotationally fixing in a dental model. , The outer surface,
An analog head (55) arranged at the coronal end of the implant analog,
And the analog head,
An abutment member connecting structure that cooperates with the abutment member so that an abutment member can be placed on the implant analog;
The abutment member connecting structure includes a crown-side abutment member contact surface (58), and the crown-side abutment member contact surface (58) directly contacts the abutment member during use. Providing a stop that defines an axial position of the abutment member relative to the implant analog, the abutment member contact surface being circularly symmetric about the longitudinal axis, circumferentially continuous, and linear. Having a longitudinal cross section, the analog head is
A crown-facing prosthesis contact surface (60), the crown-facing prosthesis contact surface contacting a dental prosthesis (70), the surface radially defining the abutment member contact surface. In a transversal position, circularly symmetric about the longitudinal axis of the implant analog, having a linear longitudinal cross-section, the coronal facing prosthetic contact surface comprising a plurality of circumferentially spaced struts. The crown-facing end prosthetic contact surface (60) formed by the crown-side end of (61) or the crown-side end of one or more annular struts radially spaced from the abutment member contact surface. ,
An implant analog further comprising: A combination of an implant analog (50) and an abutment member (20), the implant analog extending along the longitudinal axis (L) from the apical end (51) to the coronal end (52). And the implant analog is
An outer surface including a non-rotating portion (53) having a non-circular symmetrical cross section in a plane perpendicular to the longitudinal axis for non-rotating fixation in a dental model;
An analog head (55) arranged at the coronal end of the implant analog,
And the analog head,
An abutment member connecting structure that cooperates with the abutment member (20) so that the abutment member can be installed on the implant analog, wherein the abutment member connecting structure is a crown-side abutment. A member contact surface (58), wherein the crown facing abutment member contact surface (58) is in direct contact with the abutment member in use and defines an axial position of the abutment member with respect to the implant analog. An abutment member connection structure having the crown sideward abutment member contact surface (58) which is continuous in the circumferential direction to provide a stop portion for
Said abutment member (20) has apical portion (20a) and crown portions a (20b), at least the apex portion, extending along a longitudinal axis _{(L B),} wherein the apical portion Has a connecting structure (22) cooperating with the abutment member connecting structure of the implant analog, the connecting structure comprising:
An apical contact surface (24) that directly contacts the crown abutment member contact surface of the implant analog, the apical contact surface being in the axial direction of the abutment member relative to the implant analog. Defining a position and being complementary to the coronal abutment member contact surface of the implant analog and having a circumferentially continuous apical contact surface (24),
The analog head of the implant analog is a crown-facing prosthetic contact surface (60) that contacts a dental prosthesis (70), the crown-facing prosthetic contact surface being radially radial to the crown side. Facing the abutment member contact surface, one or more radially spaced from the crown side ends of the plurality of columns (61) circumferentially spaced or the crown side facing abutment member contact surface. A crown-facing prosthetic contact surface (60) formed by the coronal ends of the annular struts of
When the abutment member is installed on the implant analog, the apical-sided contact surface of the abutment member contacts the crown-sided abutment member of the implant analog around the entire circumference of the implant analog. An implant analog and an abutment member in contact with a surface, the abutment member being disposed radially inward of the coronally facing prosthetic contact surface and not in contact with the coronally facing prosthetic contact surface. .

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